Valve.



.No; 664,368.- Patented new. 18, I900. v rqr. GRDSSE & w. F. L|NTZ. r

' VALVE.

(Application filed Oct. 12, 1897.)

(No Model.)

., one erro tAS$IGN "PAT NT ()FFICE;

W LLIAM F:

I 1 '1'. HI

iin'rzyor W'AUKEGAR; ILLI'NGIS.

JTIE REJJTQ.THEOD'QREattest; orjs t mr ...Lie nanttattl ,1m. Seria1llo,.654,=.924,,(Remodel-l "..-"i-. .n! 1 A! w--,w;.,.= 121" all" whom it may concern.- Be it known that we, FREDE ICK- F; 'GROS SEJ 3 a'DQ WILLIAM F. LINTZ, of Waukegam-in the. county of Lake and State of Illinois, have i'n'-- 5 vented a new and useful Improvement in Valves,ofw hich the foll ow'in'g is a description, reference being had to" the accompanying drawings which are a part of this specifica Our in ven tion has relation'Ito iinprovemen1's in valves.

The object of the invention isto provide-an improved form'of valve which shedl be $1 iple in construction and ofsuch' characti 3 'to rgprzovide for the readydi'sassembling the parts thereof; I

With the above'primary objectin view the invention consists of the devices and parts or their equivalents, as hereinafter more fully setforth. v

Figure 1 is a vertical sectional 'view of' the ,deviceembo dying our invention, and Fig. 2

v is annnder side'view of the collar which surrounds the'valve-stem,

Referring tojthe drawings, the numeral 3 indicatesa valve-casing forming an interior valve-chamber and provided with the steam inlet and outlet passages tand 5, respectively. Coupled to the upper end of the valve-casing,

preferably by a screw-threaded connection,is avalve-stem guide 6. Engaging the threaded bore of this guide is a threaded valve=stem 7, provided. at its outer endwith a hand-wheel 8. A packing nut 9 takes onto the upper threaded end of the guide, and a packing 10 is interposed between this out and the upper extremityof said guide.

The form of valve illustrated in'the accompanying drawings consists of a collar lland-a 4o valve'd-isk 12, Said collar.beingprovided with a depending esteriorly-threadetl stem having a recess 13 formed in the-lower end thereof.

The exterior. threads of the depending stem are adapted to engage a threaded recess in the 5 upper-surface of the valve disk, whereby'the" i as. tamed by shat er-51.53.6215; elflgi ti a 16.4 Thispackingor plateis heldiin place by r means-of a nut 21 tu rnin gon a threaded ste n 22, depending from the diskv 1'2. Thisfonmsjs' the bearing-surface .of one iside or end of the valve, which surface is adapted; to fit the; seat 17, and thereby-shut ofithe steam through] 'theoutlet-passage 5.; i The top surfaeeoii the collar-11isalsoprovidediwith a recess 18, in, 6ov

which isvdisposed asoft-m etalpackin g oriplatg 19. i The valve-stemgnide6 is.provided'upon.- its lower or inner end with an annular bead; forming a. valve-seat '20.. LWhen the =-valve-. stein is turned so'astodraw. the valve away: 6:. from the valve seat 17 and toward theseat 20, the soft-metal packing or plate 19, when. the

' valve iscoinpletely opened, will'contact with that the operation, constructiom-and advan tages of our in ventionv willbe readily understood. V j

It wilLbe seenthat by providing -a valve comprising the two sections--viz., the collar 11, provided witha depending fexteriorlythreaded stem, having a recess .in its dower end, and a valve-disk havinga threaded recess in its uppersurface idapted to fit the exterior threads of the depending stein-,anda' valve stem having a head or enla rge'm'en-tat its lower end fittingl'oosely in the recessin the dependin g threaded stem of the collar a means is at'- o forded whereby thethreadediyalve stemmay be turned independently of the valveand yet at the same time force or bring the valve tons sent without causing the val via to grind or turn on its seat after contactwitlisaid 'seatand in 5 the operation 0 f bei ngbrough; fi'iflnjy hgalll st the seat. This function is: made possiblein. our construction by reason of the fact that the frictional bearing-surface o'f'the head or enlargement it of the. valve-stem. isrnuch' we smaller thanythe frictional surface of either of the valve-seats 17 or 20,-andcons'eouently the excess friction against said valve -.seats will overcome the more limited friction ofthehead or enlargement l-land permit the valve stem to turn, while the valve itself is held 5 stationary against its seat by the excess tric tion. The construction shown also presents the advantage of permitting the sections of the val veto he readil yse'parmeil, so as to pro vide for the disassembling of the parts of the valveand of the removalol' the valve-stein,

and also for the readily connection o t-the parts. I 4 w h j We wish it irndersiood hat we do not confine our invention to any particular form of valve Or Vah e-casin", as that is immaterial,

Pinasmuch as the novel featnresof the device. are applicable to almost any form of valve,

such as gate-valves, etc.

-.What weclaiin as our invention is- I In a valve, the combination of a valve-casing having inlet and outlet openings and a valve-"seat at theinouth of the outlet-opening,

a valve-stem guide extending from the cas=- ing,lthe inner end of said guideformed with a. valve-seat, a valve comprising a collar and a valve-disk, said collar having a recess in its upper surface and provided on its under surface with a depending exteri0r1;v threaded stemg the said stem having the lower endof itsboro enlarged in order to form a recess,

and said valve disk provided on its upper surface \vitii'a threaded recess adapted to receive the depending stem 01? the collar, and

disk provided with a recess and also with a depending threaded stem, a packing fitting depending stem of the collar.

tures in presence of two witnesses.

FRED ERICK F. GROSSE. WILLIAM F. LINTZ.

Witnesses: G. S. FARMER, F. A. DURST.

to he engagedby-the threads of said dependin g stem and the under surface of said valve-' ment which fits loosely in the recess of the In testimony whereof we afiix our signa- 

